Question 59 Professor ZB suspects that drinking Starbucks coffee can cure cancer
ID: 1879131 • Letter: Q
Question
Question 59
Professor ZB suspects that drinking Starbucks coffee can cure cancer and conducts an experiment to prove it. The scientist gets 1000 male volunteers with cancerous tumors in their stomach. 250 volunteers drink only water every day while the other 750 volunteers drink 3 cups of Starbucks coffee each day for 6 months. All participants are X-rayed at the beginning and end of the experiment and the size of their tumors measured. The percent increase of decrease in tumor size is calculated for all 1000 people. The change in tumor size of the coffee drinkers is compared to the change in tumor size for water only drinkers.
What is the control group?
a. The water
b. The 250 who drank water
c. There is no control group
d. The starbucks coffee
e. The 1000 participants
Selected: f. Those with tumors in their stomachsThis answer is incorrect.
g. The 750 who drank 3 cups of coffee per day
Explanation / Answer
It should be B. The 250 who drank water.
Control group is the group which live normally during the experiment. They are just used to compare the progress of the others.
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